/Engine/Plugins/VirtualProduction/CameraCalibrationCore/Source/CameraCalibrationCore/Public/CameraCalibrationSubsystem.h
Returns a list of all overlays known to the subsystem This includes the default overlays listed in the camera calibration settings as well as any of overlays that have been registered with this subsystem
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category="Lens Distortion") [TArray](API\Runtime\Core\Containers\TArray)< [FName](API\Runtime\Core\UObject\FName) > GetOverlayMaterialNames() const